User blog comment:TheSinnohDuo/Setting up my pvp team! :D/@comment-31221741-20180403125731/@comment-32358261-20180404074845

Actually desolate land creates a special super harsh sunlight that prevents other weather conditions except super harsh rain (from primal kyogre) and the delta stream (mega rayquaza). Also works similair to gen 5 weather how it stays on field forever while primal Groudon is in battle. Water moves also won’t work at all, effectively getting rid of primal Groudon’s quad weakness.

It’s really op. I believe it has the second highest base stat total at 770 (only 10 points lower than mega mewtwo and mega rayquaza). In my opinion primal Groudon is the second strongest Pokémon ever.